Google Cloud Subnet Calculator

Calculate subnet boundaries using Google Cloud Virtual Private Cloud (VPC) primary, secondary, IPv6, and bring your own IP (BYOIP) allocation rules. Apply service presets for proxy-only subnets, Private Service Connect, and Google Kubernetes Engine (GKE). Everything is calculated in your browser.

Try

Google Cloud settings

Choose an allocation model and optional service preset. Rules are advisory; follow the linked documentation when provisioning.

Allocation model Service preset

Enable JavaScript to use the subnet calculator. Calculations run locally in your browser.

Google Cloud Subnet Calculator

Google Cloud settings

Subnet details

Accepted input formats

CIDR and addresses

Masks and host counts

Ranges and subdivisions